Low-noise RF Preamplifier - Revision history

Jaystock at 17:38, 26 February 2021

2021-02-26T17:38:47Z

← Older revision		Revision as of 12:38, 26 February 2021
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	== Overview ==		== Overview ==

	A low-noise amplifier for early gain stages that functions at at a range or radio frequencies. Functions using the PHA-13LN+ (see parts list at bottom).		A low-noise 50-ohm broadband amplifier for early gain stages that functions at at a range or radio frequencies. Functions using the PHA-13LN+ (see parts list at bottom).

	Project contribution by Lincoln Craven-Brightman, Research Engineer in the MR-PIGs group.		Project contribution by Lincoln Craven-Brightman, Research Engineer in the MR-PIGs group.

2020-09-19T16:04:17Z

Safety limits

← Older revision		Revision as of 11:04, 19 September 2020
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	=== Safety limits ===		=== Safety limits ===
	The enclosure is fitted with a crossed diode on the input to protect the pre-amplifier. Preliminary testing showed the circuit survived 200 Watts of transmit RF power (~5% duty cycle). With >1 KW of power, the PHA-13 ~~blew up~~ and had to be replaced. The other components inside the enclosure survived.		The enclosure is fitted with a crossed diode on the input to protect the pre-amplifier. Preliminary testing showed the circuit survived 200 Watts of transmit RF power (~5% duty cycle). With >1 KW of power, the PHA-13 was damaged and had to be replaced. The other components inside the enclosure survived.

	=== Testing ===		=== Testing ===

2020-09-19T16:03:37Z

Safety limits

← Older revision		Revision as of 11:03, 19 September 2020
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	=== Safety limits ===		=== Safety limits ===
	~~[Safety data needed]~~		The enclosure is fitted with a crossed diode on the input to protect the pre-amplifier. Preliminary testing showed the circuit survived 200 Watts of transmit RF power (~5% duty cycle). With >1 KW of power, the PHA-13 blew up and had to be replaced. The other components inside the enclosure survived.

	=== Testing ===		=== Testing ===

2020-09-17T18:49:03Z

← Older revision		Revision as of 13:49, 17 September 2020
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	A low-noise amplifier for early gain stages that functions at at a range or radio frequencies. Functions using the PHA-13LN+ (see parts list at bottom).		A low-noise amplifier for early gain stages that functions at at a range or radio frequencies. Functions using the PHA-13LN+ (see parts list at bottom).

			Project contribution by Lincoln Craven-Brightman, Research Engineer in the MR-PIGs group.

	== Design ==		== Design ==

2020-09-15T01:32:36Z

Design

← Older revision		Revision as of 20:32, 14 September 2020
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	== Design ==		== Design ==
	The LNA is housed inside a 0.75" X 0.5625" X 0.58" RF enclosure from Lotus Systems (see parts list at bottom). The enclosure takes SMA input and output, and requires 6+ V DC with ~75 mA of operating current. The enclosure is connected to the board and SMA GND. The current model does not have impedance matching incorporated.		The LNA is housed inside a 0.75" X 0.5625" X 0.58" RF enclosure from Lotus Communications Systems (see parts list at bottom). The enclosure takes SMA input and output, and requires 6+ V DC with ~75 mA of operating current. The enclosure is connected to the board and SMA GND. The current model does not have impedance matching incorporated.

	This layout is adapted from the PHA-13 datasheet from Mini Circuits.		This layout is adapted from the PHA-13 datasheet from Mini Circuits.

2020-09-15T01:32:17Z

Design

← Older revision		Revision as of 20:32, 14 September 2020
Line 6:		Line 6:

	== Design ==		== Design ==
	The LNA is housed inside a 0.75" X 0.5625" X 0.58" RF enclosure (see parts list at bottom). The enclosure takes SMA input and output, and requires 6+ V DC with ~75 mA of operating current. The enclosure is connected to the board and SMA GND. The current model does not have impedance matching incorporated.		The LNA is housed inside a 0.75" X 0.5625" X 0.58" RF enclosure from Lotus Systems (see parts list at bottom). The enclosure takes SMA input and output, and requires 6+ V DC with ~75 mA of operating current. The enclosure is connected to the board and SMA GND. The current model does not have impedance matching incorporated.

	This layout is adapted from the PHA-13 datasheet from Mini Circuits.		This layout is adapted from the PHA-13 datasheet from Mini Circuits.

2020-08-11T15:18:52Z

Files

2020-08-11T15:17:42Z

Gain

← Older revision		Revision as of 10:17, 11 August 2020
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	The LNA demonstrates a gain of above 20 dB over 1-100 MHz. Gain slowly falls off to 17 dB at 1 GHz, and drops sharply below 1 MHz.		The LNA demonstrates a gain of above 20 dB over 1-100 MHz. Gain slowly falls off to 17 dB at 1 GHz, and drops sharply below 1 MHz.
	<br />		<br />
	[[File:~~lna_S21_100_label~~.png\|500px]]		[[File:LNA_S21_100_label.png\|500px]]
	<br />		<br />
	[[File:~~lna_S21_1000_label~~.png\|500px]]		[[File:LNA_S21_1000_label.png\|500px]]

	=== Safety limits ===		=== Safety limits ===

2020-08-11T15:16:51Z

← Older revision		Revision as of 10:16, 11 August 2020
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	[[File:lna_picture.jpg\|~~300px~~]]		[[File:lna_picture.jpg\|400px]]

	== Overview ==		== Overview ==
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	This layout is adapted from the PHA-13 datasheet from Mini Circuits.		This layout is adapted from the PHA-13 datasheet from Mini Circuits.
	<br />		<br />
	[[File:lna_inside.jpg\|~~300px~~]]		[[File:lna_inside.jpg\|400px]]
	<br />		<br />
	[[File:lna_schematic_pic.png\|1000px]]		[[File:lna_schematic_pic.png\|1000px]]
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	== Specs ==		== Specs ==
	=== Gain ===		=== Gain ===
	[~~Gain data needed~~]		The LNA demonstrates a gain of above 20 dB over 1-100 MHz. Gain slowly falls off to 17 dB at 1 GHz, and drops sharply below 1 MHz.
			<br />
			[[File:lna_S21_100_label.png\|500px]]
			<br />
			[[File:lna_S21_1000_label.png\|500px]]

	=== Safety limits ===		=== Safety limits ===

2020-08-10T20:07:33Z

Design

← Older revision		Revision as of 15:07, 10 August 2020
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	== Design ==		== Design ==
	The LNA is housed inside a 0.75" X 0.5625" X 0.58" RF enclosure (see parts list at bottom). The enclosure takes SMA input and output, and requires 6+ V DC with ~75 mA of operating current. The enclosure is connected to the board and SMA GND. The current model does not have impedance matching incorporated.		The LNA is housed inside a 0.75" X 0.5625" X 0.58" RF enclosure (see parts list at bottom). The enclosure takes SMA input and output, and requires 6+ V DC with ~75 mA of operating current. The enclosure is connected to the board and SMA GND. The current model does not have impedance matching incorporated.

			This layout is adapted from the PHA-13 datasheet from Mini Circuits.
	<br />		<br />
	[[File:lna_inside.jpg\|300px]]		[[File:lna_inside.jpg\|300px]]